单项选择题

Information and opinion gap exercises have to have some content ______ talking about.

A．worthwhile
B．worthily
C．worth
D．worthy
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单项选择题
The background music in an assembly line is designed ______.
A．being not listened to
B．not being listened to
C．to be not listened to
D．not to be listened to
单项选择题
We should always keep in mind that ______ decisions often lead to bitter regrets.
A．hasty
B．instant
C．prompt
D．rapid
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